For more information on compatible SD cards, please check out the Robertsonics website.
The µSD card is an integral part of the Qwiic Tsunami's operation. In order for the µSD card to be compatible with
the Qwiic Tsunami:
A
FAT16
or
FAT32
file system must be used
The file allocation size must be
32 kilobytes
For a
brand new card
, formatting may not be necessary. However, if users experience the Qwiic Tsunami missing
commands, making occasional strange buzzing sounds, or sometimes crashing, then the file allocation size may
be incorrect. The
Quick Format
option in the Windows operating system is the usually the simplest method to
properly format the µSD card.
The format settings for a µSD card with a Windows operating system. (Click to enlarge)
µSD Card Contents
The contents of the µSD card are the key to how the Qwiic Tsunami operates. There are two types of files that the
firmware on the Qwiic Tsunami will utilize: audio
*.wav
files and a
tsunami.ini
initialization file. The firmware on
the Qwiic Tsunami, by default, is configured to operate in the following manner:
1. Default firmware operation
(filenames matching the trigger inputs, will output on the first audio output
channel
1L
)
.
2. If there is a
tsunami.ini
file on the µSD card on reset, the Qwiic Tsunami will operate on its configuration
content.
3. Any additional changes via I2C or serial commands then take precedence over the initialization file.
Audio Files
The Qwiic Tsunami is designed to playback
*.wav
audio files from the µSD card. However, the
*wav
files must
be compatible with the firmware on the Qwiic Tsunami.
The audio format of
*.wav
files must be compatible with the firmware on the Qwiic Tsunami.
By default, the Qwiic Tsunami is factory programmed with the mono audio firmware and will only work
with
*.wav
files in mono audio format.
The filenames if the
*wav
files must follow the naming convention utilized by the firmware for the Qwiic
Tsunami to trigger the audio playback.
Audio File Format